My Chinese goose runs my Muscovy duck off her nest long enough to lay her own egg and then mama duck resumes her position on the nest. I’ve tried placing a few goose eggs in another nest to attract Lucy away from the duck’s brood but Lucy is determined to share the nest. I check the nest daily for unmarked eggs but sometimes it’s late in the evening due to my work schedule. I am collecting a few goose eggs to incubate. My question is this. If mama duck sits on the goose egg all day, (it’s good and warm), can I add it to my stockpile for incubation?